Compound for preparation of high-strength polyolefin permeable membrane and preparation method thereof

A composite and polyolefin technology, which is applied in the field of polyolefin breathable membranes, can solve the problems of high processing cost, complicated procedures, and failure to improve the mechanical properties of the breathable membrane, and achieve the effect of uniform pore size distribution and improved mechanical properties

Inactive Publication Date: 2010-06-23
KINGFA SCI & TECH CO LTD +1
View PDF2 Cites 59 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The addition of amino silicone oil is easy to form die head smoke during the film making process, and then form die head oil beads and fouling, resulting in longitudinal stripes and oil bead pollution on the film surface
In addition, the nano-calcium carbonate and heavy calcium carbonate are first made into masterbatches and then granulated with other components through a twin-screw extruder. Althoug

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] In a 500-liter high-speed mixer, according to the formula of Table 1 Example 1, 50 kilograms of ground calcium carbonate (average particle diameter 1.0 micron), 0.5 kilogram of zinc stearate, and 1 kilogram of nano-montmorillonite were added successively under low-speed stirring , 0.2 kg of titanate coupling agent, turn to high speed until the material temperature in the high-speed mixer reaches 100°C, then turn to low speed, then add 5 kg of low-density polyethylene (melt flow rate is 12g / 10min), 40 kg of ethylene and Copolymer of octene (C8) (melt flow rate is 3g / 10min), 0.2 kg of antioxidant 1010, 0.2 kg of antioxidant 168, 0.2 kg of erucamide, 0.1 kg of fluoropolymer additive (brand FX- 9613); after adding all the above materials, turn to high speed and mix for 5 minutes; put the mixed materials into the twin-screw extruder (type 75A, aspect ratio 48:1), and set the temperature of the extruder to 220°C , the host speed is 250rpm, and the feeding speed is 50rpm. Afte...

Embodiment 2

[0036]In 500 liters of high-speed mixers, according to the formula of table 1 embodiment 2, add 50 kilograms of ground calcium carbonate (average particle diameter 1.0 microns), 0.5 kilograms of zinc stearate, 2 kilograms of nano calcium carbonates, 0.2 kg of titanate coupling agent; turn to high speed until the material temperature in the high-speed mixer reaches 100°C and then turn to low speed; add 5 kg of low-density polyethylene (melt flow rate is 12g / 10min), 35 kg of ethylene and octane Copolymer of olefin (C8) (melt flow rate is 3g / 10min), 5kg polypropylene (melt flow rate is 3g / 10min), 0.2kg antioxidant 1010, 0.2kg EBS, 0.1kg fluoropolymer Additive (brand FX-9613); after adding all the above materials, turn to high speed and mix for 5 minutes; put the mixed materials into the twin-screw extruder (type 75A, length-to-diameter ratio 48:1), and the extruder temperature The setting is 220°C, the speed of the main machine is 250rpm, and the speed of feeding is 50rpm. After ...

Embodiment 3

[0039] In 500 liters of high-speed mixers, according to the formula of table 1 embodiment 3, add 50 kilograms of ground calcium carbonate (average particle diameter 100 nanometers), 0.5 kilograms of zinc stearate, 1 kilogram of nanometer montmorillonite successively under stirring at low speed , 1 kilogram of nano-calcium carbonate, 0.2 kilogram of aluminate coupling agent; turn to high speed until the material temperature in the high-speed mixer reaches 100 ℃ and then turn to low speed; add 5 kilograms of low-density polyethylene (melt flow rate is 2g / 10min ), 30 kilograms of ethylene and hexene (C6) copolymer (melt flow rate is 4.5g / 10min), 10 kilograms of high-density polyethylene (melt flow rate is 1g / 10min), 0.2 kilograms of antioxidant 1010, 0.2 kg of antioxidant 168, 0.2 kg of erucamide, 0.1 kg of fluoropolymer additive (brand FX-9613); after adding all the above materials, turn to high speed and mix for 5 minutes; put the mixed materials into the twin-screw extruder In...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a compound for preparation of a high-strength polyolefin permeable membrane and a preparation method thereof. The compound comprises the following components in parts by weight: 35-65 of polyolefin resin, 30-60 of micron inorganic filler, 1-10 of nano inorganic filler, 0.2-0.5 of antioxidant, 0.1-1.0 of processing aid and 0.1-3.0 of coupling agent. The invention can improve the mechanical properties of the polyolefin permeable membrane through reasonable selection of the polyolefin resin and the nano inorganic filler, thereby reducing the thickness of the permeable membrane under the condition that the use requirements are satisfied. Moreover, the invention not only can fully develop the strengthening function of the nano filler, but also can obtain the permeable membrane with uniform aperture distribution and with water pressure resistance up to 100cm through the reasonable surface processing and the economical process flow. The transverse tensile strength of the permeable membrane is higher than 15MPa, the vertical tensile strength of the permeable membrane is higher than 30MPa, and the water pressure test reaches a 100cm water column, that is, the membrane can bear the 100cm water column without water permeation, breakage and the like.

Description

technical field [0001] The invention relates to the technical field of polyolefin gas-permeable membranes, in particular to a compound used for preparing high-strength polyolefin gas-permeable membranes and its preparation technology. Background technique [0002] The breathable film can be formed by mixing thermoplastic polymer with a certain proportion of mineral fillers, casting or blown into a film through an extruder, and then stretching longitudinally or transversely to form voids around the filler particles. The size of the polyolefin can be controlled, it allows water vapor, air and other gases to pass through but does not allow liquids to pass through, so as to obtain a breathable and impermeable polyolefin breathable membrane. [0003] This functional film product has been widely used in personal hygiene products, medical clothing, food packaging, crop preservation, building waterproofing and other fields. In these fields, most occasions need to print the surface ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C08L23/00C08K13/06C08K9/04C08J9/00B29C41/24B29C69/02B29L7/00
Inventor 何浏炜王斌汪海宁凯军
Owner KINGFA SCI & TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap